Representative Ileana Ros-Lehtinen on Friday endorsed gay marriage, making her the first GOP member of Congress to approve of such unions.

Ros-Lehtinen confirmed she supports gay nuptials to gay weekly the Washington Blade.

The congresswoman is the only Republican to co-sponsor a bill which seeks to repeal the Defense of Marriage Act (DOMA), which forbids federal agencies from recognizing the legal marriages of gay and lesbian couples, making her support something of a foregone conclusion.

“Ileana Ros-Lehtinen is a champion in the fight for full LGBT equality,” said Michael Cole-Schwartz, spokesman for the Human Rights Campaign (HRC). “Her willingness to be a leader in the Republican Party on LGBT issues, including becoming the first Republican member of Congress to embrace marriage equality, is opening the way for other Republican officials to speak out.”

Ros-Lehtinen also told the paper that she disagrees with presumptive GOP presidential candidate Mitt Romney on marriage equality but supports his campaign.

“Well I support him because of his views on the business issues and the economy,” she said. “There are a lot of issues in which I disagree with Mitt Romney, but there are a lot of issues in which I disagree with members of my family. But I love them all the same.”

(Related: Mitt Romney's NAACP speech criticized by gay GOP group.)